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Stellar Occultation by (153) Hilda on 2023-08-15 (20:51:08 UT)

CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.


Event Details
 Occultation UUID [and db] : f41f45a0-ddb3-11f0-547e-6edfbfffa625 [observed]

 Occultation Date + Time   : 2023-08-15 at 20:51:08 UT +/- 0.85 min  [1]
 Object Designation        : (153) Hilda
 Star Designation          : GDR3 4148204483926811648
 Star Coordinates (ICRF)   : RA = 17 46 19.1319, DE = -15 37 42.928  [2]
 Star Magnitudes           : G = 13.44 mag, RP = 12.36 mag, BP = 14.67 mag
 Object Magnitude          : V = 13.38 mag
 Estimated Magnitude Drop  : 0.7 mag
 Estimated Max. Duration   : 122.7 sec
 Speed of the shadow       : 1.4 km/s
 Object Mean Diameter      : 170.6 km  (src: astorb) => apparent = 85 mas
 Apparent Motion           : 0.0417 arcs/min @ PA = 167 deg
 Horizontal Parallax       : 3.1830 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 128° (sunlit = 0%), Sun = 124°
 Cross-track uncertainty   : 1.0 mas = 2 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.85 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#85
 Note                      : FP:true

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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